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Yamaha 150 Four Stroke stalling under load

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Yamaha 150 Four Stroke stalling under load

Old 05-25-2020, 03:10 PM
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Default Yamaha 150 Four Stroke stalling under load

2010 Yamaha F150 4 stroke. Have personally put about 10 hours on it. Last time out my water in fuel alarm went off. Brought her home and to be safe I pumped all the fuel out and dried the tank completely. Replaced fuel water separator, engine fuel filter and refilled completely with ethanol free fuel. Went out today, she idled beautifully and had noticeably more power than before. About 3 minutes into 4800ish rpms she started acting like she was running out of fuel and shut off. Started right back up and idled perfectly. When I pushed the throttle down it started shaking and shut off again. Idled from bank to bank fishing for a couple hours and when I left it ran flat out (after I pumped the bulb) for another 3 or 4 minutes before shutting off again. Have to add that it will run perfectly in neutral at 5k RPMs for a couple minutes. Thoughts?
Old 05-25-2020, 03:23 PM
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Its starving for fuel. Find the bottleneck. There are multiple fuel/ water separators on my boat. 3 filters total between the tank and the injectors. I don’t know anything about your 2010 but my 2016 have the large filters in the fuel line on the boat, the small filters under the engine cowl and there is one more even smaller filter that is the last line of defense.

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